CVE-2025-27779 Applio allows unsafe deserialization in model_blender.py
Applio allows remote code execution via unsafe deserialization when loading user-supplied model files using torch.load.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27779?
CVE-2025-27779 is a high-severity unsafe deserialization vulnerability in IAHispano Applio, published on 19 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Applio is a voice conversion tool. Versions 3.2.8-bugfix and prior are vulnerable to unsafe deserialization in `model_blender.py` lines 20 and 21. `model_fusion_a` and `model_fusion_b` from voice_blender.py take user-supplied input (e.g. a path to a model) and pass that value to the `run_model_blender_script` and later to `model_blender` function, which loads these two models with `torch.load` in `model_blender.py (on lines 20-21 in 3.2.8-bugfix), which is vulnerable to unsafe deserialization. The issue can lead to remote code execution. A patch is available on the `main` branch of the Applio repository.
Weakness: CWE-502
Which versions are affected by CVE-2025-27779?
It affects 1 product.
Products include Applio Applio.
How do I fix CVE-2025-27779?
No fix has been published for CVE-2025-27779 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-27779 being exploited?
There is no known exploitation of CVE-2025-27779 in the wild and no public exploit code.
Other vulnerabilities in IAHispano Applio
- CVE-2025-27778 Applio allows unsafe deserialization in infer.py
- CVE-2025-27780 Applio allows unsafe deserialization in model_information.py
- CVE-2025-27781 Applio allows unsafe deserialization in inference.py
- CVE-2025-27774 Applio allows SSRF and file write in model_download.py
- CVE-2025-27775 Applio allows SSRF and file write in model_download.py